Digital oscilloscope control apparatus

Claim 2

In digital measurement and display apparatus, including input means for receiving an input signal, measurement means connected to the input means for measuring the input signal, memory means connected to the measurement means for storing measurement data, display means connected to the memory means for displaying stored data, sweep means having means responsive to a predetermined trigger signal, and the sweep means connected to the measurement means for controlling operation thereof in response to a trigger signal, the improved control apparatus comprising: selectively operable hold next means for providing a single signal; control means connected to the hold next means and the sweep means; the control means including means responsive to the single signal from the hold next means for arming the sweep means to respond to the next predetermined trigger signal and for thereafter inhibiting further response of the sweep means; selectively operable release means for providing a single signal; means connecting the release means to the control means; and the control means including means responsive to thE single signal from the release means for releasing further inhibit of the sweep means.

Claim 3

The apparatus of claim 1 including: selectively operable hold last means for providing a single signal; means connecting the hold last means to the control means; and the control means including further means responsive to the single signal from the hold last means for inhibiting operation of the sweep means.

Claim 4

The apparatus of claim 2 including: means for remotely controlling selection of the hold next means, the release means, and the hold last means.

Claim 5

The apparatus of claim 1 in which: the hold next means and the release means each comprise single switch means.

Claim 6

The apparatus of claim 2 in which: the hold last means comprises single switch means.

Claim 7

The apparatus of claim 4 in which: the single switch means comprise pushbutton switch means.

Claim 8

The apparatus of claim 5 in which: the single swtich means comprises pushbutton switch means.

Claim 9

In digital measurement and display apparatus, including input means for receiving an input signal, measurement means connected to the input means for measuring the input signal, memory means connected to the measurement means for storing measurement data, display means connected to the memory means for displaying stored data, sweep means having means responsive to a predetermined trigger signal, and the sweep means connected to the measurement means for controlling operation thereof in response to a trigger signal, the improved control apparatus comprising: trigger signal input means connected to the trigger signal responsive means for normally enabling the sweep means in response to a trigger signal; control means connected to the trigger signal responsive means; hold next signal means connected to the control means and including selectively operable means for providing a single signal; the control means including means responsive to the single signal for preventing enabling of the sweep means after one sweep means enabling trigger signal has occurred following the single signal; release means connected to the control means and including selectively operable means for providing a further single signal; and the control means including means responsive to the further single signal for allowing the sweep means to be enabled by every predetermined trigger signal following the further single signal.

Claim 10

In digital measurement and display apparatus, including input means for receiving an input signal, measurement means connected to the input means for measuring the input signal, memory means connected to the measurement means for storing measurement data, display means connected to the memory means for displaying stored data, sweep means having means responsive to a predetermined trigger signal, and the sweep means connected to the measurement means for controlling operation thereof in response to a trigger signal, the improved control apparatus comprising: trigger signal input means connected to the trigger signal responsive means for normally enabling the sweep means in response to a trigger signal; control means connected to the trigger signal responsive means; hold next signal means connected to the control means and including selectively operable means for providing a single signal; the control means including means responsive to the single signal for preventing enabling of the sweep means after one sweep means enabling trigger signal has occurred following the single signal; release means connected to the control means and including selectively operable means for providing a further single signal; and the control means including means responsive to the further single signal for allowing the sweep means to be enabled by every predetermined trigger signal following the further single signal.

Claim 11

The apparatus of claim 8 including: hold last signal means connected to the control means and including selectively operable means for providing another single signal; and the control means including means responsive to the another single signal for preventing enabling of the sweep means following the another single signal.

Claim 12

The apparatus of claim 8 in which: the trigger signal responsive means comprises first bistable means having a first stable state for enabling the sweep means and a second stable state for disabling the sweep means; means connecting the trigger signal input means to the first bistable means for normally switching the first bistable means to the first state on the occurrence of a predetermined trigger signal; the means responsive to the single signal comprises second bistable means having first and second bistable states; gate means connecting the second bistable means to the first bistable means for preventing the first bistable means from switching to the first stable state when the second bistable means is in the second stable state; the hold next signal means connected to the second bistable means for selectively switching the second bistable means to the first stable state in response to the single signal; and the means responsive to the single signal including further means connected to the first and second bistable means for switching the second bistable means to the second state when one trigger signal has enabled the sweep means following the occurrence of the single signal from the hold next signal means.

Claim 13

The apparatus of claim 10 including: means connecting the release means to the second bistable means and to the further means, for selectively switching the second bistable means to the first stable state on the occurrence of the further single signal.

Claim 14

The apparatus of claim 10 including: means connecting the hold last signal means to the second bistable means for switching the second bistable means to the second stable state on the occurrence of the another single signal.

Claim 15

In digital measurement and display apparatus, including input means for receiving an input signal, measurement means connected to the input means for measuring the input signal, memory means connected to the measurement means for storing measurement data, display means connected to the memory means for displaying stored data, sweep means having means responsive to a predetermined trigger signal, and the sweep means connected to the measurement means for controlling operation thereof in response to a trigger signal, the improved control apparatus comprising: first, second, third and fourth flip-flops each having set and reset input terminals, a clock input terminal, clock gate set and reset input terminals, and set and reset output terminals; the first flip-flop set output terminal connected to the sweep means and the third flip-flop clock input terminal; trigger signal input means connected to the first flip-flop clock input terminal; first, second, third, fourth and fifth gate means each having first and second input terminals and an output terminal; means connecting the first gate output terminal to the first flip-flop clock gate set terminal; means connecting the first gate first input terminal to the first flip-flop set output terminal; means connecting the first gate second input terminal to the second flip-flop set output terminal; hold next signal input means connected to the second gate first input terminal; release signal input means connected to the second gate second input terminal; means connecting the second gate output terminal to the second flip-flop set input terminal and the third gate first input terminal; means connecting the second flip-flop reset output terminal to the third gate second input terminal; means connecting the third gate output terminal to the third flip-flop reset input terminal; means connecting the second flip-flop set output terminal to the fourth gate first input terminal; means connecting the third flip-flop reset output terminal to the fourth gate second input terminal and to the fifth gate first input terminal; means connecting the fourth gate output terminal to the second flip-flop clock gate reset input terminal; means connecting the fourth flip-flop set output terminal to the third flip-flop clock gate set input terminal; means connecting the release signal input means to the fifth gate second input terminal; means connecting the fifth gate output terminal to the fourth flip-flop reset input terminal; means connecting the hold next signal input means to the fourth flip-flop set input terminal; and means connecting the sweep means to the first flip-flop reset input terminal and the second flip-flop clock input terminal for providing an end of sweep signal thereto.

Claim 16

In digital measurement and display apparatus, including input means for receiving an input signal, measurement means connected to the input means for measuring the input signal, memory means connected to the measurement means for storing measurement data, display means connected to the memory means for displaying stored data, sweep means having means responsive to a predetermined trigger signal, and the sweep means connected to the measurement means for controlling operation thereof in response to a trigger signal, the improved control apparatus comprising: first, second, third and fourth flip-flops each having set and reset input terminals, a clock input terminal, clock gate set and reset input terminals, and set and reset output terminals; the first flip-flop set output terminal connected to the sweep means and the third flip-flop clock input terminal; trigger signal input means connected to the first flip-flop clock input terminal; first, second, third, fourth and fifth gate means each having first and second input terminals and an output terminal; means connecting the first gate output terminal to the first flip-flop clock gate set terminal; means connecting the first gate first input terminal to the first flip-flop set output terminal; means connecting the first gate second input terminal to the second flip-flop set output terminal; hold next signal input means connected to the second gate first input terminal; release signal input means connected to the second gate second input terminal; means connecting the second gate output terminal to the second flip-flop set input terminal and the third gate first input terminal; means connecting the second flip-flop reset output terminal to the third gate second input terminal; means connecting the third gate output terminal to the third flip-flop reset input terminal; means connecting the second flip-flop set output terminal to the fourth gate first input terminal; means connecting the third flip-flop reset output terminal to the fourth gate second input terminal and to the fifth gate first input terminal; means connecting the fourth gate output terminal to the second flip-flop clock gate reset input terminal; means connecting the fourth flip-flop set output terminal to the third flip-flop clock gate set input terminal; means connecting the release signal input means to the fifth gate second input terminal; means connecting the fifth gate output terminal to the fourth flip-flop reset input terminal; means connecting the hold next signal input means to the fourth flip-flop set input terminal; and means connecting the sweep means to the first flip-flop reset input terminal and the second flip-flop clock input terminal for providing an end of sweep signal thereto.

Claim 17

The apparatus of claim 13 including: hold last signal input means connected to the second flip-flop reset input terminal means.